CN110266035A - Industrial roof photovoltaic power station direct current cabinet battery discharge control device - Google Patents
Industrial roof photovoltaic power station direct current cabinet battery discharge control device Download PDFInfo
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- CN110266035A CN110266035A CN201910366838.5A CN201910366838A CN110266035A CN 110266035 A CN110266035 A CN 110266035A CN 201910366838 A CN201910366838 A CN 201910366838A CN 110266035 A CN110266035 A CN 110266035A
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- direct current
- contactor
- current cabinet
- power
- photovoltaic power
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- 241000060287 Myotis dasycneme Species 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000010248 power generation Methods 0.000 abstract description 4
- 230000002411 adverse Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 5
- 230000010354 integration Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- H02J3/383—
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- H02J7/0022—
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- H02J7/0026—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention provides industrial roof photovoltaic power station direct current cabinet battery discharge control devices.It solves the problems, such as that direct current cabinet electric power storage tank discharge is uncontrollable in the prior art.The present apparatus includes battery BAT, power-off delay relay and D.C. contactor, the coiler part of power-off delay relay with the secondary side of station local coordinate frame T1 for connecting, one end of the disconnection moving together contact of power-off delay relay is used to connect the anode of direct current cabinet direct current output bus, the other end of the disconnection moving together contact of power-off delay relay is connected with the input side of the coiler part of D.C. contactor, the outlet side of the coiler part of D.C. contactor with the cathode of direct current cabinet direct current output bus for connecting, battery BAT is connected by switch QF with direct current cabinet direct current output bus, the contact of D.C. contactor and switch QF are in parallel.This control device can intelligent control accumulator cell charging and discharging, effectively avoid adverse effect caused by exhausting because of accumulator electric-quantity photovoltaic power station power generation.
Description
Technical field
The invention belongs to electronic technology fields, are related to a kind of control device, especially a kind of industrial roof distributed photovoltaic
Electric station DC screen battery discharge control device.
Background technique
China is that first production of energy state and country of consumption, energy demand are supplied sustainable growth, sent out energetically in the world at present
The trend that the renewable energy including photovoltaic has become national energy transition is opened up, solar photovoltaic power plant adds up installation amount and answers
Up to 150GW, the ground centralization power station of distributed power station and 80GW including 70GW.
The medium-sized photovoltaic power station switchyard accessed by 10~35kV voltage class is generally mainly by grid integration
The composition such as cabinet, metering cabinet, buckling cabinet, step-up transformer outgoing line cabinet, direct current cabinet.Photovoltaic plant metering, relay protection, communication and
The power supply of the secondary systems equipment such as fault wave recording device is provided by direct current cabinet.Existing roof photovoltaic power station direct current cabinet is in outside
Grid power blackout or because itself relay protection movement make grid integration switch separating brake when, direct current cabinet battery automatic discharging to zero is
Only, so that the switchyards secondary devices such as metering, communication and protective relaying device is in off-position, cause power station operation maintenance personnel can not
Restore switchyard direct current cabinet and the power supply of grid integration switch and close a floodgate, influences photovoltaic power station power generation operation.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of industrial roof photovoltaic power station direct current cabinet electric power storage tank discharges
Control device, to solve the problems, such as that existing direct current cabinet electric power storage tank discharge is uncontrollable.
Object of the invention can be realized by the following technical scheme:
A kind of industry roof photovoltaic power station direct current cabinet battery discharge control device, which is characterized in that including storing
Battery BAT, power-off delay relay and D.C. contactor, the coiler part of the power-off delay relay are used for and are stood with change
The secondary side of depressor T1 connects, and one end of the disconnection moving together contact of the power-off delay relay is for connecting direct current cabinet direct current
Export the anode of bus, the other end of the disconnection moving together contact of the power-off delay relay and the D.C. contactor
The input side of coiler part connects, and the outlet side of the coiler part of the D.C. contactor is used for and direct current cabinet direct current output is female
The cathode of line connects, and the battery BAT is connected by switch QF with the direct current cabinet direct current output bus, described
The contact of D.C. contactor and the switch QF are in parallel.
It further include charging mould in above-mentioned industrial roof photovoltaic power station direct current cabinet battery discharge control device
Block, the input side of the charging module with the secondary side of the station local coordinate frame T1 for connecting, the charging module
Outlet side connected with the battery BAT by direct current cabinet direct current output bus.
In above-mentioned industrial roof photovoltaic power station direct current cabinet battery discharge control device, the charging mould
Diode, the anode and the charging mould of the diode are connected between block and the direct current cabinet direct current output bus
The outlet side of block connects, the anode connection of the cathode of the diode and the direct current cabinet direct current output bus
In above-mentioned industrial roof photovoltaic power station direct current cabinet battery discharge control device, the station becomes
The A.C. contactor KM for control circuit on-off is provided between the secondary side of depressor T1 and the charging module.
In above-mentioned industrial roof photovoltaic power station direct current cabinet battery discharge control device, the switch QF
There are two, a switch QF is connected between the positive DC screen direct current output bus anode of the battery BAT, another
A switch QF is connected between the negative DC screen direct current output bus cathode of the battery BAT, the direct current contact
There are two the contacts of device, and two contacts of D.C. contactor and two switch QF are in parallel correspondingly.
In above-mentioned industrial roof photovoltaic power station direct current cabinet battery discharge control device, the direct current is connect
Tentaculum is open type D.C. contactor.
Compared with prior art, this industry roof photovoltaic power station direct current cabinet battery discharge control device have with
Lower advantage: using after this control device, made by power-off delay relay in route electric network power-fail or the movement of relay protection separating brake
Station local coordinate frame sets battery discharge delay turn-off time in the case of exporting without alternating voltage, makes discharge time of accumulator can
Control, prevent direct current cabinet battery BAT due to station local coordinate frame T1 and charging module unpowered input automatic discharging until electricity is
Zero, it is ensured that battery BAT capacity surplus is in order to photovoltaic plant direct current cabinet after the recovery of power grid incoming call or photovoltaic trouble shooting and simultaneously
Net access switch service restoration and combined floodgate are restarted, to avoid the case where generated energy loses caused by being unable to run because of photovoltaic plant hair
It is raw.
Detailed description of the invention
Fig. 1 is the schematic diagram of industrial roof photovoltaic power station direct current cabinet battery discharge control device of the invention.
Fig. 2 is in industrial roof photovoltaic power station direct current cabinet battery discharge control device access power grid of the invention
Working condition schematic diagram.
In figure, 1, power-off delay relay；2, D.C. contactor.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As depicted in figs. 1 and 2, this industry roof photovoltaic power station direct current cabinet battery discharge control device includes storing
Battery BAT, power-off delay relay 1, D.C. contactor 2 and charging module, wherein D.C. contactor 2 is open type direct current
Contactor.The coiler part of power-off delay relay 1 with the secondary side of station local coordinate frame T1 for connecting, power-off delay relay
One end of 1 disconnection moving together contact is used to connect the anode of direct current cabinet direct current output bus, and the disconnection of power-off delay relay 1 is dynamic
The other end of conjunction contact is connected with the input side of the coiler part of D.C. contactor 2, the output of the coiler part of D.C. contactor 2
For connecting with the cathode of direct current cabinet direct current output bus, the battery BAT passes through switch QF and direct current cabinet direct current output for side
Bus is connected, and the contact of D.C. contactor 2 and switch QF are in parallel；The input side of charging module is used for and station local coordinate frame T1
Secondary side connection, the outlet side of charging module connected by direct current cabinet direct current output bus with battery BAT.
Specifically, there are two switch QF, the positive DC screen direct current that a switch QF is connected to battery BAT is defeated
Out between bus anode, another switch QF is connected between the negative DC screen direct current output bus cathode of battery BAT, directly
There are two the contacts for flowing contactor 2, and two contacts of D.C. contactor 2 and two switch QF are in parallel correspondingly.
Diode, the anode and charging module of diode are connected between charging module and direct current cabinet direct current output bus
Outlet side connection, the anode connection of the cathode of diode and direct current cabinet direct current output bus.The secondary side of station local coordinate frame T1
The A.C. contactor KM for control circuit on-off is provided on route between charging module.
Working principle of the present invention is as follows:
It is preferred it is noted that operating normally power generation operation in power station and switch QF is equal in the power generation operation time out of service
It is set to off-state；Have and only discharge in battery BAT and stop manual bypass when direct current cabinet needs to restore electricity, by switch QF
It is set to closed state.Direct current cabinet by station local coordinate frame T1 and exchange input charging module as external power supply source.It stands use
It is connect at the primary side of transformer T1 and the low-pressure side of photovoltaic plant step-up transformer T2, the secondary side output of station local coordinate frame T1
400Vac voltage to charging module input side, charging module outlet side output 110Vdc DC voltage phase battery BAT fill
Electricity；When station local coordinate frame T1 and charging module be not for electricity output, battery BAT automatic discharging.
When the power network line where photovoltaic electric station grid connection access has a power failure, the secondary side of station local coordinate frame T1 is without 400Vac
Voltage output, A.C. contactor KM are disconnected, and charging module does not have 110Vdc output, battery automatic discharging at this time；Power-off delay
The disconnection moving together contact of relay 1 disconnects after the delay time of setting reaches, and 2 contact of D.C. contactor disconnects, battery
BAT stops electric discharge.
When because of the triggering grid integration switch protection tripping of photovoltaic plant itself protective relaying device action protection, stand with change
The secondary side of depressor T1 is disconnected without 400Vac voltage output, A.C. contactor KM, and charging module does not have 110Vdc output at this time, is stored
Battery BAT automatic discharging；The disconnection moving together contact of power-off delay relay 1 disconnects after the delay time of setting reaches, directly
It flows 2 contact of contactor to disconnect, battery BAT stops electric discharge.
Battery BAT electric discharge stops, and direct current cabinet and photovoltaic plant switchyard grid integration switch need to restore electricity and close
When lock, manual bypass switch QF, after station local coordinate frame T1 and charging module for power supply recovery, the delay of power-off delay relay 1 is disconnected
Conjunction contact actuation is started, and then promotes 2 contact of D.C. contactor to be attracted again and is in an off state switch QF again.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (6)
1. a kind of industry roof photovoltaic power station direct current cabinet battery discharge control device, which is characterized in that including electric power storage
The coiler part of pond BAT, power-off delay relay (1) and D.C. contactor (2), the power-off delay relay (1) is used for
It is connected with the secondary side of station local coordinate frame T1, one end of the disconnection moving together contact of the power-off delay relay (1) is for connecting
Meet the anode of direct current cabinet direct current output bus, the other end of the disconnection moving together contact of the power-off delay relay (1) and institute
The input side of the coiler part for the D.C. contactor (2) stated connects, the outlet side of the coiler part of the D.C. contactor (2)
For connecting with the cathode of direct current cabinet direct current output bus, the battery BAT is straight by switch QF and the direct current cabinet
Stream output bus is connected, and the contact of the D.C. contactor (2) and the switch QF are in parallel.
2. industry roof according to claim 1 photovoltaic power station direct current cabinet battery discharge control device, special
Sign is, further includes charging module, and the input side of the charging module is used for and the secondary side of the station local coordinate frame T1
The outlet side of connection, the charging module is connected by direct current cabinet direct current output bus with the battery BAT.
3. industry roof according to claim 2 photovoltaic power station direct current cabinet battery discharge control device, special
Sign is, is connected with diode, the diode between the charging module and the direct current cabinet direct current output bus
Anode connected with the outlet side of the charging module, the cathode of the diode and the described direct current cabinet direct current output mother
The anode connection of line.
4. industry roof according to claim 2 photovoltaic power station direct current cabinet battery discharge control device, special
Sign is, is provided between the secondary side and the charging module of the station local coordinate frame T1 for control circuit on-off
A.C. contactor KM.
5. industry roof according to claim 1 or 2 or 3 or 4 photovoltaic power station direct current cabinet battery control of discharge
Device, which is characterized in that there are two the switch QF, and a switch QF is connected to the positive DC of the battery BAT
Shield between direct current output bus anode, another switch QF is connected to the negative DC screen direct current output of the battery BAT
Between bus cathode, there are two the contacts of the D.C. contactor (2), and two contacts of D.C. contactor (2) and two open
It is in parallel correspondingly to close QF.
6. industry roof according to claim 1 or 2 or 3 or 4 photovoltaic power station direct current cabinet battery control of discharge
Device, which is characterized in that the D.C. contactor (2) is open type D.C. contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910366838.5A CN110266035B (en) | 2019-04-30 | 2019-04-30 | Discharge control device for direct-current screen storage battery of industrial roof distributed photovoltaic power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910366838.5A CN110266035B (en) | 2019-04-30 | 2019-04-30 | Discharge control device for direct-current screen storage battery of industrial roof distributed photovoltaic power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110266035A true CN110266035A (en) | 2019-09-20 |
| CN110266035B CN110266035B (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910366838.5A Active CN110266035B (en) | 2019-04-30 | 2019-04-30 | Discharge control device for direct-current screen storage battery of industrial roof distributed photovoltaic power station |
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| CN (1) | CN110266035B (en) |
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| CN110266035B (en) | 2021-08-24 |
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